The battery life of the Walkman is short even though it is fully charged. (Walkman NW-A30 series/NW-WM1A/WM1Z)

The Walkman does not turn off automatically when playback is stopped. As a result, the battery will be depleted unless you turn off the power when you stop playback.You can save the battery by turning off the Walkman whenever you are not using it.

Turning the Walkman on or off (NW-A Series):[1]: Power button

Hold down the power button for 3 seconds while the screen is on.

Follow the onscreen instructions to turn off the Walkman.

Release the HOLD function if it is active.

NOTE: The screen will turn off automatically if you do not operate the Walkman for a certain period of time.